Programming Issue Connected to Tool / System Change

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Programming Issue Connected to Tool / System Change

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I have recently migrated from Quartus 13 on 32bit Windows Vista to Quartus 15 on 64bit Windows 7. I am working with DE2-115 development boards, extracting data from them over USB using FTDI UMFT1601A to connect to the PC. As of this tool/system change, when the FTDI daughter board is connected to the PC, Programmer no longer recognizes that a USB-Blaster device is connected to the computer.

The order of connection does not matter. The FTDI chip always overrides.

jtagconfig.exe report is consistent with the GUI.

Device Manager properly reports which devices are connected to the machine.

Altera took care of driver filename conflicts many years ago.

Any suggestions on how to resolve this problem are appreciated.

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